IBI DNA/RNA/Protein Extraction Kit, IBI Scientific

The DNA/RNA/Protein Extraction Kit provides an efficient method for purifying genomic DNA, total RNA, and total protein simultaneously from cultured cells, animal tissues, whole blood, and biological fluids

DNA/RNA purification can be completed in 25 minutes without phenol/chloroform extraction or alcohol precipitation, and protein purification can be completed in 50 minutes. The purified DNA, with approximately 20 – 30Kb, is suitable for use in PCR or other enzymatic reactions and the purified RNA (including miRNA) is ready for use in RT-PCR, Real-Time PCR, northern blotting, primer extension, mRNA selection, and cDNA synthesis. The purified proteins can be directly analyzed on a SDS-PAGE and subsequent western blot.

The quality of the DNA/RNA Extraction Kit is tested on a lot-to-lot basis by isolating genomic DNA and total RNA from 1×106 cultured animal cells. The purified DNA and total RNA is quantified with a spectrophotometer and analyzed by electrophoresis on a 1% agarose gel.  The purified protein is quantified by Bradford assay analyzed on SDS-PAGE.

Chaotropic salt is used to lyse cells and inactivate DNases and RNases, allowing DNA to bind to the genomic DNA spin column. The flow-through can then be transferred to the RNA Spin column for RNA binding. Contaminants are effectively removed using wash buffers followed by pure genomic DNA elution in a low salt buffer and pure total RNA elution in RNase-free water.